galea

A Roman helmet.

(botany) A part of a flower or plant that is shaped like a helmet or hood.

(entomology) A mouthpart found in some species of insect; a flap that is part of the maxilla, so-called after the flaps attached to the sides of a Roman helmet.

(surgery) A kind of bandage for the head.

(medicine) A headache extending all over the head.